Forming device for low-smoke halogen-free sheath material

Abstract

The invention relates to the technical field of sheath material production, and discloses a low-smoke halogen-free sheath material forming device, which comprises a production mechanism, and is characterized in that a sheath material placed in the production mechanism is melted and extruded into a long-strip-shaped sheath material; the traction unit is connected with the production mechanism; the mounting seat is arranged on the traction unit, and a cutting mechanism is further arranged on the mounting seat; the transportation unit is connected with the traction unit, and the sheath material particles are raw materials used by the cable or the sheath in the cable; through the arrangement of the first traction part and the third traction part, long-strip-shaped sheath materials can be guided, limited and carded; and in the moving process of the carding piece, the third driving piece can adjust the position of the carding piece in the length direction and the radial direction of the limiting rod, supporting and limiting work on the long-strip-shaped sheath materials is achieved, multiple bundles of long-strip-shaped sheath materials are made to pass through the corresponding discharging openings, and production and processing work of the sheath raw materials for the cables is completed.

Description

Technical Field

[0001] The invention relates to the technical field of sheath material production, in particular to a molding device for low-smoke halogen-free sheath material. Background Art

[0002] Sheath material is an external material used to cover and protect wires and cables or electronic devices, usually made of polymer compounds such as polyethylene (PE), polyvinyl chloride (PVC), etc. It has good insulation, corrosion resistance, wear resistance and flame retardancy, can effectively prevent wires and cables or electronic devices from being damaged by the external environment, and ensure the safety and stable operation of the circuit.

[0003] For example, a patent application with publication number CN119136963A discloses a cutting device for cutting extruded plastic profiles: it includes a tool arranged on a tool holder; a pivot arm, by which the tool holder can move together with the tool toward or away from the extrusion axis; a device for pivoting the pivot arm; the tool is connected to the tool holder and can be oriented in a plane at right angles to the extrusion axis via an adjustment portion, and / or the tool is connected to the tool holder and the pivot arm, wherein the pivot arm is arranged on a device for pivoting, and the device for pivoting is an electromechanical drive device, which includes at least one cycloid transmission device, and the cycloid transmission device is directly connected to the actuator.

[0004] However, the above technical solution still has some problems. In the production process of the above-mentioned wire sheathing material, the linear sheathing material is transported to a predetermined cutting area, and then the long strip sheathing material is cut into particles by the existing cutting mechanism. However, due to the different diameters of the required sheathing material particles, there are also differences in the diameters of the long strip sheathing materials. The existing cutting method is to set up the same number of cutting mechanisms as the long strip sheathing materials to complete the cutting work. When the required diameter of the sheathing material particles is smaller, one cutting mechanism can complete the cutting of multiple long strip sheathing materials. At this time, using the above-mentioned cutting method will lead to a waste of resources.

[0005] Therefore, when the required sheath material has a small diameter, how to enable a cutting mechanism to simultaneously complete the cutting of multiple long strips of sheath material is a problem to be solved at present. Summary of the invention

[0006] The present invention provides a low-smoke halogen-free sheath material forming device to solve the above problems existing in the prior art.

[0007] A molding device for low-smoke halogen-free sheath material, comprising: A production mechanism, for melting the sheath material placed in the production mechanism and extruding the sheath material in the form of long strips; A traction unit, connected to the production mechanism, for combing and limiting the extruded long strip sheath material; A mounting seat, arranged on the traction unit, and a cutting mechanism for cutting and shaping the long strip of sheathing material is also provided on the mounting seat; A transport unit connected to the traction unit, used to receive the cut sheath material and transport it, wherein the sheath material is the raw material used for the sheath in the cable or wire; The traction unit comprises a placement table, a limiting rod, a first traction part and a third traction part; The placing table is located on one side of the production mechanism, and is provided with a plurality of feed ports and a plurality of discharge ports, as well as a limiting part arranged in the discharge port for pulling and limiting the long strip sheath material; The limiting rod is fixedly mounted on the placement platform; The first traction part and the third traction part are respectively sleeved on the limiting rod. Both the first traction part and the third traction part can guide the long strip sheath material, and the third traction part can also limit and comb the long strip sheath material.

[0008] Furthermore, the first traction part includes a first driving member, a plurality of connection frames arranged on the first driving member, and two first limiting rings symmetrically arranged on the connection frames; The third traction part includes a third driving member, and a combing member arranged on the third driving member; The first driving member and the third driving member have the same structure; The connecting frame is a U-shaped structure, and there is a difference in distance between the two free ends of the U-shaped connecting frame and the first driving member, wherein one end of the connecting frame with a shorter distance is closer to the feed port than the other end of the connecting frame.

[0009] Further, the first driving member includes a rotating motor fixedly mounted on the placing table, a rotating seat connected to the output end of the rotating motor, an eccentric shaft arranged at a non-center position of the rotating seat, a driven slide rail connected to the eccentric shaft, two first slide bars symmetrically arranged on the driven slide rail, and a slide seat for connecting the first slide bar and the limit rod; The length direction of the first sliding rod is perpendicular to the length direction of the limiting rod; By means of the eccentric shaft arranged on the rotating seat, the driven slide rail can be made to move synchronously in the axial direction and the radial direction of the limiting rod, so that the positions of the first limiting ring and the combing member can be adjusted.

[0010] Furthermore, the number of the combing elements is multiple; The combing member includes a fixed seat fixedly mounted on the third driving member, a sliding seat arranged on the fixed seat, a second limiting ring arranged on the sliding seat and slidably connected to the sliding seat, a driving wheel and two driven wheels respectively arranged on the fixed seat, a driving belt for connecting the driving wheel and the driven wheel, and a limiting motor connected to the driving wheel and arranged on the fixed seat; There is a gap between the driven wheel and the outer wall of the second limiting ring, and the driving belt is located in the gap, and the movement of the driving belt drives the second limiting ring to move on the sliding seat; The second limiting ring is provided with a sliding groove, and the sliding seat is provided with an arc-shaped protrusion adapted to the sliding groove; The sliding seat and the fixed seat are provided with through holes for the long strip sheath material to pass through.

[0011] Further, the limiting part includes at least three mounting shafts arranged on the inner wall of the discharge port, an articulated seat arranged on the mounting shaft, a limiting cylinder movably connected to the articulated seat, a driving block arranged at the output end of the limiting cylinder, two driving rods symmetrically arranged on the driving block and movably connected to the driving block, a driving seat for connecting the two driving rods, and a plurality of connecting rods arranged on the driving seat; One end of the connecting rod is arranged on the mounting shaft; The installation shaft is provided with a waist-shaped hole, and the driving block is provided with a convex end adapted to the waist-shaped hole.

[0012] Furthermore, the driving seat is also provided with at least two driving wheels, a limiting belt for connecting the driving wheels, and a rotating motor provided on the driving seat and connected to one of the driving wheels; The limiting belt is provided with a plurality of limiting strips; The distance between the limiting belt and the long strip of sheathing material is adjusted by the limiting cylinder to limit the long strip of sheathing material, and the limiting part pulls the long strip of sheathing material through the rotation of the rotating motor so that it can be located in the cutting area, and the cutting of the long strip of sheathing material is completed through the cutting mechanism.

[0013] Furthermore, the placement table is further provided with a second traction portion, and the second traction portion is located between the first traction portion and the third traction portion; The second traction part includes a fixed plate fixedly mounted on the placement table, a telescopic cylinder symmetrically mounted on the fixed plate, a connecting piece connected to the output end of the telescopic cylinder, a flip plate connected to the connecting piece and movably connected to the fixed plate, a first guide rod uniformly arranged on the flip plate, a connecting block connected to one end of the first guide rod, and a second guide rod arranged on the connecting block; The first guide rod, the second guide rod and the connecting block are provided with placement channels, wherein the placement channel in the connecting block has a certain curvature and a sponge is provided in the placement channel.

[0014] Furthermore, the transport unit includes a conveyor, two discharge valves and a discharge box arranged on the conveyor, and a return pipe for connecting one of the discharge valves with the discharge box.

[0015] Further, the conveyor includes two conveying pipes, a driving box for connecting the two conveying pipes, a connecting shaft built into the driving box, a driving gear sleeved on the connecting shaft, a transport chain for connecting the two driving gears and located in the conveying pipes, and a driving motor arranged on one of the driving boxes and connected to the connecting shaft; The return pipe is connected to a discharge valve close to the drive motor to transport the sheath material remaining in the conveying pipe to the discharge box; One of the conveying pipes is a feed pipe, and the other conveying pipe is a discharge pipe.

[0016] Beneficial effect: The present invention discloses a forming device for low-smoke halogen-free sheathing materials. In order to enable a cutting mechanism to simultaneously complete the cutting of multiple long-strip sheathing materials, a traction unit is provided in the device. Through the third traction part in the traction unit, the die head with extrusion holes of different sizes is replaced to extrude long-strip sheathing materials of different diameters, and then the long-strip sheathing materials can pass through the traction unit. At this time, the corresponding number of long-strip sheathing materials is selected according to the diameter of the extrusion hole on the replaced die to pass through the third traction part, and then the limit motor starts to work. The moving limit motor can drive the driving wheel to rotate, and the moving driving wheel drives the driven wheel to rotate through the set driving belt. Since the driving belt is located between the driven wheel and the second limit ring, when the driving belt moves, the second limit ring can move on the sliding seat, so as to complete The limiting work of multiple bundles of long strip sheathing materials is carried out, and after the multiple long strip sheathing materials pass through the limiting part, one end of the multiple long strip sheathing materials is located in the predetermined cutting area to complete the cutting work. During the movement of the combing member, the third driving member starts to work, and can adjust the position of the combing member in the length direction and radial direction of the limiting rod. First, in the movement in the length direction, according to the deformation of the long strip sheathing material, the combing member is close to or away from the second traction part, which can support and limit the long strip sheathing material. The radial movement can adjust the position of the combing member in the length direction of the placement table, so that multiple bundles of long strip sheathing materials pass through the corresponding discharge port, so that the cutting mechanism completes the cutting and forming work of the long strip sheathing material, and completes the production and processing of the raw materials for cable sheathing. At this time, one cutting mechanism can complete the cutting work of multiple bundles of sheathing materials, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a molding device for low-smoke zero-halogen sheath material of the present invention; Figure 2 is a schematic diagram of a traction unit of the present invention; Figure 3 is a schematic structural diagram of the first traction part of the present invention; Figure 4 is a schematic structural diagram of the second traction part of the present invention; Figure 5 It is a schematic diagram of the structure of the combing member of the present invention; Figure 6 It is a schematic diagram of the limiting portion of the present invention; Figure 7 It is a three-dimensional diagram of the limiting portion of the present invention; Figure 8 is a schematic diagram of a transport unit of the present invention; Fig. 9 is a schematic diagram of a conveyor of the present invention; Fig.10 It is a schematic diagram of a rotating seat of the present invention.

[0018] Figure numerals: 1, preheating device; 2, extruder; 3, cooling box; 4, traction unit; 41, placement table; 42, first traction part; 421, rotating motor; 422, rotating seat; 423, eccentric shaft; 424, driven slide rail; 425, first slide bar; 426, slide seat; 427, connecting frame; 428, first limiting ring; 43, second traction part; 431, fixed plate; 432, telescopic cylinder; 433, connecting piece; 434, flip plate; 435, first guide rod; 436, second guide rod; 437, connecting block; 44, third traction part; 441, limiting motor; 442, fixed seat; 443, driving wheel ;444, driven wheel;445, sliding seat;446, second limiting ring;45, limiting part;451, mounting shaft;452, hinged seat;453, limiting cylinder;454, driving block;455, driving rod;456, driving seat;457, connecting rod;458, rotating motor;459, driving wheel;4510, limiting belt;46, limiting seat;5, mounting seat;6, transport unit;61, unloading box;62, conveyor;621, conveying pipe;622, driving box;623, driving motor;624, connecting shaft;625, driving gear;626, transport chain;63, discharge valve;64, return pipe. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] The present invention discloses a low smoke zero halogen sheath material forming device, referring to Figure 1-Figure 10 , a low smoke zero halogen sheath material forming device comprises: A production mechanism is provided, which melts the sheath material placed in the production mechanism and extrude the sheath material in the form of long strips; a traction unit 4 is connected to the production mechanism and is used to comb and limit the extruded long strips of sheath material; a mounting seat 5 is arranged on the traction unit 4, and the mounting seat 5 is also provided with a cutting mechanism for cutting and shaping the long strips of sheath material; a transportation unit 6 is connected to the traction unit 4 and is used to receive the sheath material particles after cutting and transport them, and the sheath material particles are the raw materials used for the sheath in the cable or cable; the traction unit 4 includes a placement table 41, a limiting rod, a first traction part 42 and a third traction part 44; the placement table 4 1, located at one side of the production mechanism, a plurality of feed ports and a plurality of discharge ports are provided on the placement table 41, the number of the discharge ports is less than the number of the feed ports, and a limiting portion 45 is arranged in the discharge port for traction and limiting the long strip sheathing material; a limiting rod is fixedly installed on the placement table 41; a first traction portion 42 and a third traction portion 44 are respectively sleeved on the limiting rod, the first traction portion 42 and the third traction portion 44 can both guide the long strip sheathing material, and the third traction portion 44 can also limit and comb the long strip sheathing material; a tubular limiting seat 46 is provided at the feed port, and the limiting seat 46 and the first limiting ring 428 are elastic.

[0023] By setting up a third driving member, the position of the combing member in the length direction and radial direction of the limiting rod can be adjusted. First, in the movement in the length direction, according to the deformation of the long strip sheathing material, the combing member is made close to or away from the second traction part 43, which can play a role in supporting and limiting the long strip sheathing material. The radial movement can adjust the position of the combing member in the length direction of the placement table 41, so that multiple bundles of long strip sheathing materials pass through the corresponding discharge ports, so that the cutting mechanism completes the cutting and forming work of the long strip sheathing materials, and completes the production and processing of the raw materials for cable sheathing; at the same time, one cutting mechanism can complete the cutting work of multiple bundles of sheathing materials, thereby improving work efficiency; by setting up the combing member, the limiting work of multiple bundles of long strip sheathing materials can be completed, and after multiple long strip sheathing materials pass through the limiting part 45, one end of multiple long strip sheathing materials is located in the predetermined cutting area to complete the cutting work.

[0024] The first traction part 42 includes a first driving member, a plurality of connection frames 427 arranged on the first driving member, and two first limiting rings 428 symmetrically arranged on the connection frame 427; the third traction part 44 includes a third driving member and a combing member arranged on the third driving member; the first driving member and the third driving member have the same structure; wherein the connection frame 427 is a U-shaped structure, and there is a difference in the distance between the two free ends of the U-shaped connection frame 427 and the first driving member, wherein one end of the connection frame 427 with a shorter distance is closer to the feed port than the other end of the connection frame 427; by setting the U-shaped connection frame 427, the long strip of sheathing material located on the connection frame 427 is placed obliquely, so that the water droplets attached thereto can be separated from the sheathing material body under the influence of their own weight, and the first driving member can be set to adjust the support position of the connection frame 427 on the sheathing material, so as to avoid the sheathing material from being too large and deformed, thereby causing a large inclination angle between the end face of one end of the sheathing material and the cutting face of the cutting mechanism during subsequent cutting and forming, so that the processed sheathing material does not meet the established standards.

[0025] The first driving member includes a rotating motor 421 fixedly mounted on the placing table 41, a rotating seat 422 connected to the output end of the rotating motor 421, an eccentric shaft 423 arranged at a non-center position of the rotating seat 422, a driven slide 424 connected to the eccentric shaft 423, two first slide bars 425 symmetrically arranged on the driven slide 424, and a slide seat 426 for connecting the first slide bar 425 and the limiting rod; wherein the length direction of the first slide bar 425 is perpendicular to the length direction of the limiting rod; through the eccentric shaft 423 arranged on the rotating seat 422, the driven slide 424 can be moved in the axial and radial directions of the limiting rod. The eccentric shaft 423 is moved synchronously with the upper end, thereby being able to adjust the position of the first limit ring 428 and the combing part; when the position of the connecting frame 427 needs to be adjusted, the rotating motor 421 starts to work, and the moving rotating motor 421 can drive the rotating seat 422 to move. At this time, the moving rotating seat 422 can drive the eccentric shaft 423 to move, thereby being able to drive the driven slide rail 424 connected to the eccentric shaft 423 to move, and then change the axial and radial positions of the connecting frame 427 on the limit rod with the cooperation of the slide seat 426, thereby adjusting the supporting position of the connecting frame 427, and avoiding excessive deformation of the sheath material when passing through the traction unit 4, which leads to the failure of the cutting and forming work.

[0026] There are multiple combing parts; the combing parts include a fixed seat 442 fixedly mounted on the third driving member, a sliding seat 445 arranged on the fixed seat 442, and a second limiting ring 446 arranged on the sliding seat 445 and slidably connected to the sliding seat 445, a driving wheel 443 and two driven wheels 444 respectively arranged on the fixed seat 442, a driving belt for connecting the driving wheel 443 and the driven wheel 444, and a limiting motor 441 connected to the driving wheel 443 and arranged on the fixed seat 442; there is a gap between the driven wheel 444 and the outer wall of the limiting ring, the driving belt is located in the gap, and the movement of the driving belt drives the second limiting ring 446 to move on the sliding seat 445; the limiting ring is provided with The slide groove is provided on the sliding seat 445, and an arc-shaped protrusion adapted to the slide groove is provided; the sliding seat 445 and the fixed seat 442 are provided with through holes for the passage of the long strip sheathing material; the limiting motor 441 starts to work, and the moving limiting motor 441 can drive the driving wheel 443 to rotate, and the moving driving wheel 443 drives the driven wheel 444 to rotate through the set driving belt. Since the driving belt is located between the driven wheel 444 and the second limiting ring 446, when the driving belt moves, the second limiting ring 446 can move on the sliding seat 445, thereby completing the limiting work of multiple bundles of long strip sheathing materials, and after multiple long strip sheathing materials pass through the limiting part 45, the limiting part 45 makes one end of the multiple long strip sheathing materials located in the predetermined cutting area to complete the cutting work.

[0027] The limiting part 45 includes at least three mounting shafts 451 arranged on the inner wall of the discharge port, an articulated seat 452 arranged on the mounting shaft 451, a limiting cylinder 453 movably connected to the articulated seat 452, a driving block 454 arranged at the output end of the limiting cylinder 453, two driving rods 455 symmetrically arranged on the driving block 454 and movably connected to the driving block 454, a driving seat 456 for connecting the two driving rods 455, and a plurality of connecting rods 457 arranged on the driving seat 456; one of the connecting rods 457 is connected to the other. The end is arranged on the installation shaft 451; the installation shaft 451 is provided with a waist-shaped hole, and the driving block 454 is provided with a raised end adapted to the waist-shaped hole; the driving seat 456 is also provided with at least two driving wheels 459, a limiting belt 4510 for connecting the driving wheel 459, and a rotating motor 458 arranged on the driving seat 456 and connected to one of the driving wheels 459; the limiting belt 4510 is provided with a plurality of limiting strips; the distance between the limiting belt 4510 and the long strip sheath material is adjusted by the limiting cylinder 453, and the long strip sheath is The material is limited, and the rotation of the rotating motor 458 enables the limiting part 45 to pull the long strip of sheathing material so that it can be located in the cutting area, and the cutting mechanism completes the cutting of the long strip of sheathing material; in order to complete the limiting drive work of multiple bundles of sheathing materials, when multiple bundles of sheathing materials pass through the discharge port, the limiting cylinder 453 starts to work, and the moving limiting cylinder 453 can push the driving block 454 to move in the length direction of the installation shaft 451, so that the moving driving block 454 can adjust the position of the driving seat 456 through the set driving rod 455, Since the three limiting cylinders 453 move synchronously, the area between the three driving seats 456 can be reduced, so that the limiting belt 4510 on the driving seat 456 can abut against the surface of the sheath material, and then the rotating motor 458 starts to work, and the moving rotating motor 458 drives the driving wheel 459 to rotate, thereby driving the limiting belt 4510 to move. Since the limiting belt 4510 abuts against the long strip of sheath material, during the process of limiting the sheath material, it will also drive the sheath material to move, so that the sheath material is located in the predetermined cutting area, and the cutting of the sheath material is completed.

[0028] The placing platform 41 is also provided with a second traction part 43, which is located between the first traction part 42 and the third traction part 44; the second traction part 43 includes a fixed plate 431 fixedly installed on the placing platform 41, a telescopic cylinder 432 symmetrically installed on the fixed plate 431, a connecting piece 433 connected to the output end of the telescopic cylinder 432, a flip plate 434 connected to the connecting piece 433 and movably connected to the fixed plate 431, a first guide rod 435 evenly arranged on the flip plate 434, a connecting block 437 connected to one end of the first guide rod 435, and a second guide rod 436 arranged on the connecting block 437; wherein the first guide rod 435, the second guide rod 436 and the connecting block 437 are provided with a placing channel, wherein the placing channel located in the connecting block 437 has a certain curvature and a sponge is provided in the placing channel; when the long strip sheath material passes through the first traction rod After the guide part 42, at this time, one end of the long strip sheathing material passes through the first guide rod 435, the connecting block 437 and the second guide rod 436 in sequence, and then passes through the set third traction part 44; when the sheathing material passes through the second traction part 43, the telescopic cylinder 432 starts to work, and the moving telescopic cylinder 432 can drive the connecting piece 433 to start moving, and then the moving connecting piece 433 can drive the flip plate 434 to move, so that the flip plate 434 can rotate, and adjust the curvature of the sheathing material located in the first guide rod 435, the connecting block 437 and the second guide rod 436, so as to avoid the long strip sheathing material between the second traction part 43 and the limiting part 45 from deforming too much. If the deformation is too large, it will cause the sheathing material to contact with the placement table 41. At the same time, due to the drive of the limiting part 45, it will cause the sheathing material and the placement table 41 to be displaced, causing damage to the sheathing cover; a rotating shaft is provided between the flip plate 434 and the placement table 41; In a further embodiment, since the sheathing material with a smaller diameter needs to pass through a combing piece after passing through the second traction part 43, the sheathing material between the second traction part 43 and the combing piece will cause a certain degree of deformation, that is, the distance between adjacent long strips of sheathing material gradually decreases along the direction from the second traction part 43 to the third traction part 44. Therefore, when the combing piece limits the sheathing material, the flip plate 434 can adjust the position of the first guide rod 435, thereby adjusting the deformation of the sheathing sleeve. On the premise of ensuring that it does not contact the placement table 41, it can also support and limit the sheathing sleeve, reduce the tension of the sheathing material, and avoid damage to the sheathing material. The provided sponge can wipe off the water droplets remaining on the sheathing sleeve to reduce the adhesion of water droplets.

[0029] The transport unit 6 includes a conveyor 62 in the form of a circular tube chain, two discharge valves 63 and a discharge box 61 arranged on the conveyor 62, and a return pipe 64 for connecting one of the discharge valves 63 and the discharge box 61; the conveyor 62 includes two conveying pipes 621, a drive box 622 for connecting the two conveying pipes 621, a connecting shaft 624 built in the drive box 622, a driving gear 625 sleeved on the connecting shaft 624, a transport chain piece 626 located in the conveying pipe 621 for connecting the two driving gears 625, and a driving motor 623 arranged on one of the driving boxes 622 and connected to the connecting shaft 624; wherein the return pipe 64 is connected to the discharge valve 63 close to the driving motor 623, and is used to return the residual material in the conveying pipe 621 to the return pipe 64. The sheathing material is transported to the discharge box 61; one of the conveying pipes 621 is a feed pipe, and the other conveying pipe 621 is a discharge pipe; the discharge box 61 is provided with a feed port; the cutting mechanism is provided to complete the cutting of the sheathing material, and then the cut sheathing material can fall into the discharge box 61, and then the driving motor 623 starts to work, the moving driving motor 623 can drive the connecting shaft 624 to rotate, the moving connecting shaft 624 can drive the driving gear 625 to rotate, thereby driving the transport chain 626 to move, the gap between adjacent chain pieces in the transport chain 626 is the transport area, under the operation of the driving motor 623, the sheathing material can be driven to move in the conveying pipe 621, and then discharged from the discharge valve 63 away from the driving motor 623, completing the quantitative transportation of the sheathing material.

[0030] The transport unit 6 includes the following two transport modes, one of which is that both discharge valves 63 are detachably provided with collecting bags. Initially, the discharge valve 63 far away from the driving motor 623 is opened, and the collecting bag connected to the discharge valve 63 collects the particles. When the collecting bag reaches the predetermined collection volume, the discharge valve 63 is closed, and the other discharge valve 63 is started, so that the sheath material is discharged from the other discharge valve 63, and the collection of the sheath material can be completed without interrupting the transport process. The second is that a return pipe 64 is provided between the discharge valve 63 close to the driving motor 623 and the discharge box 61. At this time, the discharge valve 63 close to the driving motor 623 is in a normally open state, and the material will not enter the driving box 622, ensuring that the transport chain 626 in the driving box 622 can be meshed with the driving gear 625, thereby ensuring the smooth progress of the transport work.

[0031] In a further embodiment, the production mechanism also includes a preheating device 1, an extruder 2 and a cooling box 3. The preheating device 1 is used to melt the sheath material and transport the molten sheath material to the extruder 2. Then, the extruder 2 is set to form a long strip of sheath material at the die head and the long strip of sheath material is immersed in the coolant in the cooling box 3 for cooling.

[0032] Working principle description: the preheating device 1 is used to melt the sheath material and transport the melted sheath material to the extruder 2, and then the extruder 2 is set to form a long strip of sheath material at the die head and the long strip of sheath material is immersed in the coolant in the cooling box 3 for cooling, and then the formed sheath material is sequentially passed through the traction unit 4 and the cutting mechanism, and the sheath material is cut into particles by the cutting mechanism and falls into the transport unit 6, completing the transportation of the sheath material; When the position of the connecting frame 427 needs to be adjusted, the rotating motor 421 starts to work, and the moving rotating motor 421 can drive the rotating seat 422 to move. At this time, the moving rotating seat 422 can drive the eccentric shaft 423 to move, thereby driving the driven slide rail 424 connected to the eccentric shaft 423 to move, and then the position of the connecting frame 427 in the axial and radial directions of the limit rod is changed with the cooperation of the slide seat 426, so as to adjust the support position of the connecting frame 427; by setting the connecting frame 427 with a U-shaped structure, the long strip of sheathing material located on the connecting frame 427 is tilted, so that the water droplets attached thereto can be separated from the sheathing material body under the influence of their own weight, and the first driving member can be set to adjust the support position of the connecting frame 427 for the sheathing material, so as to avoid the sheathing material from being too large and deformed, thereby causing a large inclination angle between the end face of one end of the sheathing material and the cutting surface of the cutting mechanism during subsequent cutting and forming, so that the processed sheathing material does not meet the established standards; When the sheath material passes through the second traction part 43, the telescopic cylinder 432 starts to work, and the moving telescopic cylinder 432 can drive the connecting member 433 to start moving, and then the moving connecting member 433 can drive the flip plate 434 to move, so that the flip plate 434 can rotate, and the curvature of the sheath material located in the first guide rod 435, the connecting block 437 and the second guide rod 436 is adjusted, so as to avoid excessive deformation of the long strip of sheath material between the second traction part 43 and the limiting part 45, which may cause the sheath material to contact with the placement table 41; When the third traction part 44 needs to start moving, the limiting motor 441 starts working, and the moving limiting motor 441 can drive the driving wheel 443 to rotate, and the moving driving wheel 443 drives the driven wheel 444 to rotate through the set driving belt. Since the driving belt is located between the driven wheel 444 and the second limiting ring 446, when the driving belt moves, the second limiting ring 446 can move on the sliding seat 445, so that the limiting work of multiple bundles of long strip sheathing materials can be completed, and after the multiple long strip sheathing materials pass through the limiting part 45, one end of the multiple long strip sheathing materials is located in the predetermined cutting area to complete the cutting work, and the working process of the third driving member is the same as that of the first driving member, which will not be repeated here; In order to complete the limiting driving work of multiple bundles of sheathing materials, when multiple bundles of sheathing materials pass through the discharge port, the limiting cylinder 453 starts to work, and the moving limiting cylinder 453 can push the driving block 454 to move in the length direction of the installation shaft 451, so that the moving driving block 454 can adjust the position of the driving seat 456 through the set driving rod 455. Since the three limiting cylinders 453 move synchronously, the area between the three driving seats 456 can be reduced, so that the limiting belt 4510 on the driving seat 456 can abut against the surface of the sheathing material, and then the rotating motor 458 starts to work, and the moving rotating motor 458 drives the driving wheel 459 to rotate, thereby driving the limiting belt 4510 to move. Since the limiting belt 4510 abuts against the long strip of sheathing material, during the process of limiting the sheathing material, it will also drive the sheathing material to move, so that the sheathing material is located in the predetermined cutting area, and the cutting work of the sheathing material is completed; The cutting mechanism is set up to complete the cutting work of the sheathing material, and then the cut sheathing material can fall into the discharge box 61, and then the driving motor 623 starts to work, and the moving driving motor 623 can drive the connecting shaft 624 to rotate, and the moving connecting shaft 624 can drive the driving gear 625 to rotate, thereby driving the transport chain 626 to move, and the gap between adjacent chain pieces in the transport chain 626 is the transport area. Under the operation of the driving motor 623, the sheathing material can be driven to move in the conveying pipe 621, and then discharged from the discharge valve 63 away from the driving motor 623, completing the quantitative transportation of the sheathing material.

[0033] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A molding device for low-smoke halogen-free sheath material, characterized in that: include: A production mechanism, for melting the sheath material placed in the production mechanism and extruding the sheath material in the form of long strips; A traction unit (4), connected to the production mechanism, and used for combing and limiting the position of the extruded long strip sheath material; A mounting seat (5) is arranged on the traction unit (4), and a cutting mechanism for cutting and shaping the long strip of sheath material is also provided on the mounting seat (5); A transport unit (6) connected to the traction unit (4) and used to receive the cut sheathing material particles and transport them, wherein the sheathing material particles are raw materials used for sheaths in cables or wires; The traction unit (4) comprises a placement table (41), a limiting rod, a first traction part (42) and a third traction part (44); The placement table (41) is located on one side of the production mechanism, and is provided with a plurality of feed ports and a plurality of discharge ports, as well as a limiting portion (45) disposed in the discharge ports for pulling and limiting the long strip of sheath material; The limiting rod is fixedly mounted on the placement platform (41); The first traction part (42) and the third traction part (44) are respectively sleeved on the limiting rod; the first traction part (42) and the third traction part (44) are both capable of guiding the long strip of sheathing material; the third traction part (44) is also capable of limiting and combing the long strip of sheathing material.

2. A low smoke zero halogen sheath material forming device according to claim 1, characterized in that: The first traction part (42) comprises a first driving member, a plurality of connection frames (427) arranged on the first driving member, and two first limiting rings (428) symmetrically arranged on the connection frames (427); The third traction part (44) comprises a third driving member, and a combing member arranged on the third driving member; The first driving member and the third driving member have the same structure; The connecting frame (427) is a U-shaped structure, and there is a difference in distance between the two free ends of the U-shaped connecting frame (427) and the first driving member, wherein one end of the connecting frame (427) with a shorter distance is closer to the feed port than the other end of the connecting frame (427).

3. A low smoke zero halogen sheath material forming device according to claim 2, characterized in that: The first driving member comprises a rotating motor (421) fixedly mounted on the placing table (41), a rotating seat (422) connected to the output end of the rotating motor (421), an eccentric shaft (423) arranged at a non-center position of the rotating seat (422), a driven slide rail (424) connected to the eccentric shaft (423), two first slide bars (425) symmetrically arranged on the driven slide rail (424), and a slide seat (426) for connecting the first slide bars (425) and the limit rod; The length direction of the first sliding rod (425) is perpendicular to the length direction of the limiting rod; By means of the eccentric shaft (423) arranged on the rotating seat (422), the driven slide rail (424) can be made to move synchronously in the axial and radial directions of the limiting rod, thereby adjusting the positions of the first limiting ring (428) and the combing member.

4. A low smoke zero halogen sheath material forming device according to claim 2, characterized in that: The number of the combing pieces is multiple; The combing member comprises a fixed seat (442) fixedly mounted on the third driving member, a sliding seat (445) arranged on the fixed seat (442), a second limiting ring (446) arranged on the sliding seat (445) and slidably connected to the sliding seat (445), a driving wheel (443) and two driven wheels (444) respectively arranged on the fixed seat (442), a driving belt for connecting the driving wheel (443) and the driven wheels (444), and a limiting motor (441) connected to the driving wheel (443) and arranged on the fixed seat (442); There is a gap between the driven wheel (444) and the outer wall of the second limiting ring (446), and the driving belt is located in the gap, and the movement of the driving belt drives the second limiting ring (446) to move on the sliding seat (445); The second limiting ring (446) is provided with a sliding groove, and the sliding seat (445) is provided with an arc-shaped protrusion adapted to the sliding groove; The sliding seat (445) and the fixed seat (442) are provided with through holes for the long strip of sheathing material to pass through.

5. The low smoke zero halogen sheath material forming device according to claim 1, characterized in that: The limiting portion (45) comprises at least three mounting shafts (451) arranged on the inner wall of the discharge port, an articulated seat (452) arranged on the mounting shaft (451), a limiting cylinder (453) movably connected to the articulated seat (452), a driving block (454) arranged at the output end of the limiting cylinder (453), two driving rods (455) symmetrically arranged on the driving block (454) and movably connected to the driving block (454), a driving seat (456) for connecting the two driving rods (455), and a plurality of connecting rods (457) arranged on the driving seat (456); One end of the connecting rod (457) is arranged on the mounting shaft (451); The mounting shaft (451) is provided with a waist-shaped hole, and the driving block (454) is provided with a protruding end adapted to the waist-shaped hole.

6. A low-smoke zero-halogen sheath material forming device according to claim 5, characterized in that: The drive seat (456) is also provided with at least two driving wheels (459), a limiting belt (4510) for connecting the driving wheels (459), and a rotating motor (458) provided on the drive seat (456) and connected to one of the driving wheels (459); The limiting belt (4510) is provided with a plurality of limiting strips; The distance between the limiting belt (4510) and the long strip of sheathing material is adjusted by the limiting cylinder (453) to limit the position of the long strip of sheathing material, and the limiting portion (45) is caused to pull the long strip of sheathing material by the rotation of the rotary motor (458) so that the long strip of sheathing material can be located in the cutting area, and the long strip of sheathing material is cut by the cutting mechanism.

7. A low smoke zero halogen sheath material forming device according to claim 1, characterized in that: The placement platform (41) is also provided with a second traction portion (43), and the second traction portion (43) is located between the first traction portion (42) and the third traction portion (44); The second traction part (43) comprises a fixed plate (431) fixedly mounted on the placement table (41), a telescopic cylinder (432) symmetrically mounted on the fixed plate (431), a connecting piece (433) connected to the output end of the telescopic cylinder (432), a flip plate (434) connected to the connecting piece (433) and movably connected to the fixed plate (431), a first guide rod (435) evenly arranged on the flip plate (434), a connecting block (437) connected to one end of the first guide rod (435), and a second guide rod (436) arranged on the connecting block (437); The first guide rod (435), the second guide rod (436) and the connecting block (437) are provided with placement channels, wherein the placement channel in the connecting block (437) has an arc and a sponge is provided in the placement channel.

8. A low smoke zero halogen sheath material forming device according to claim 7, characterized in that: The transport unit (6) comprises a conveyor (62), two discharge valves (63) arranged on the conveyor (62) and a discharge box (61), and a return pipe (64) for connecting one of the discharge valves (63) and the discharge box (61).

9. A low-smoke zero-halogen sheath material forming device according to claim 8, characterized in that: The conveyor (62) comprises two conveying tubes (621), a driving box (622) for connecting the two conveying tubes (621), a connecting shaft (624) built into the driving box (622), a driving gear (625) sleeved on the connecting shaft (624), a transport chain (626) for connecting the two driving gears (625) and located in the conveying tubes (621), and a driving motor (623) arranged on one of the driving boxes (622) and connected to the connecting shaft (624); The return pipe (64) is connected to a discharge valve (63) close to the drive motor (623) and is used to transport the sheath material remaining in the conveying pipe (621) to the discharge box (61); One of the conveying pipes (621) is a feed pipe, and the other conveying pipe (621) is a discharge pipe.

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